[4] The theory behind the MEU(SOC) is to provide continuous and perpetual maritime & amphibious force projection.
A MEU(SOC) is also expected to be capable of providing various forms of security or a military presence to any region worldwide, within 24–72 hours of receiving orders.
Such crises may range from natural disasters to civil or national discord, or total invasion of forces into a hostile area.
[5] These operations include: Therefore, "the primary objective of the MEU(SOC)...is to provide the theater CINC's with an effective means of dealing with the uncertainties of future threats, providing a forward deployed unit that is inherently balanced, sustainable, flexible, responsive, expandable and credible.
In addition to the conventional capabilities noted above, MEU(SOC)s will, upon deployment, possess the following skills and capabilities:[17] Every 18-months, all units that are under the Marine air-ground task force's MEFs assemble the MEUs and train them individually within their units, or together in a cohesive exercise.
Many Marines attend courses or training schools that may require advancement or additional skills to meet the demand of their unit's quota.
At the beginning of the intermediate training phase, an operational analysis is conducted by the MEU Commander in order to assess the strengths and weaknesses of the subordinate elements.
Once developed, the MEU Commander will provide training guidance to improve and sustain the MSE's required capabilities.